WOW!
Thanks for all the responses and in under an hour (direct as well as through
the reflectors).
(I guess "we" were in need of another topic to address!...on the VHF Contesting
reflector anyway.)
To repeat, the unit with which I am experiencing this interference is a Garmin
GPS V.
For some more detail, the 'interference detector' is an FT-736R and the 'usual'
location of the GPS is on the dashboard of my pick-em up (on a beanbag 'mount')
running from a combo CLA/Data cord (though I am not presently using the data
port...still not comfortable with trying to run a laptop from the mobile/rover
set-up). I am using the 'attached stubby' antenna.
Several others also reported noise floor rises on 2m and 70cm when their GPS
units were turned on (and in radios other than FT-736s) so this may be a
'general' problem rather than specific to 222.
No, I have not contacted Garmin directly (was kind of hoping that someone at
Garmin was a VHF enthusiast and might be reading the reflectors...thought the
'direct route' IS probably the best). Paul, ND2X/5, reports that he DID contact
Garmin about a GPS V and that they told him the GPS V was a known noise
problem...Paul ALSO reported that his GPS III+ is dead quiet and he's been told
that the 76C is dead quiet as well.
ANOTHER thought/question that I've had (since posting) is if an active antenna
might reduce the noise...since there is an amp trying to force the signals in
the opposite direction of any signals that might radiate and 'hoping' that the
'reverse gain' of the active antenna 'amp' would sufficiently attenuate such
spurious.
Again THANKS to all who have responded so far (and to those who may still
respond).
Maybe to keep this from getting out of hand in terms of traffic on the
reflectors...consider replying direct to me (rather than 'blasting' one or both
reflectors) and I will again summarize the responses I get.
73, JK
_______________________________________________
VHFcontesting mailing list
VHFcontesting@contesting.com
http://lists.contesting.com/mailman/listinfo/vhfcontesting
|